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Richgrove, CA Tap Water Quality 2026

Water quality report for Richgrove, CA — PFAS, lead and copper results, violation history and state inspection findings from EPA SDWIS.

A look at Richgrove's drinking water using EPA enforcement records: violations, lead and copper results, PFAS sampling and state inspection findings.

Main Utility: Richgrove Community Services District PWSID: CA5410024 Updated: 2026 Q2
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1 violation currently open

Lead was not detected. PFAS has never been sampled at this system.

D

Richgrove earns a D for water quality

Graded on violations and lead, with state inspection findings. PFAS not tested.

Lead: not detected
PFAS never sampled at this system
67 violations since 2015, 12 health-based
1 violation currently open
Richgrove's lead level vs. all California community water systems
0 ppb5 ppb10 ppb15 ppb
Lead level: Not detected — 0% of the federal action level
✓ Lower lead than % of California utilities
Population Served
2358
~525 connections
Water Source
Groundwater
Drawn from wells — SDWIS source code GW
Active Violations
1
1 open of 67 since 2015

Lead & Copper Testing

Lead (Pb)
90th percentile of tap samples collected across the distribution system
0% of EPA action level
Not detected
Action level: 15 ppb
Lead was not detected at the 90th percentile — the result fell below the laboratory detection limit. That is not the same as an absence of lead in every tap, and older homes with lead service lines can still show higher readings.

Contaminant Violations (2015–Present)

ContaminantTypeMeasuredLimitPeriodStatus
Lead and Copper Rule MONITORING AND REPORTING — TT 2025 Addressed
Nitrate MCL EXCEEDANCE 14.3 MG/L 10 mg/L 2025 Archived
Nitrate MCL EXCEEDANCE 16.2 MG/L 10 mg/L 2025 Archived
Consumer Confidence Rule OTHER — — 2025 Addressed
Nitrate MCL EXCEEDANCE 12.3 MG/L 10 mg/L 2025 Archived
LEAD AND COPPER RULE REVISIONS TREATMENT TECHNIQUE — — 2024 Unaddressed
LEAD AND COPPER RULE REVISIONS REPORTING FAILURE — — 2024 Unaddressed
Nitrate MONITORING AND REPORTING — 10 mg/L 2024 Archived
TTHM MONITORING AND REPORTING — 0.080 mg/L 2023 Archived
Arsenic MONITORING AND REPORTING — 0.010 mg/L 2022–2025 Archived
Barium MONITORING AND REPORTING — 2 mg/L 2022–2025 Archived
Cadmium MONITORING AND REPORTING — 0.005 mg/L 2022–2025 Archived
Chromium MONITORING AND REPORTING — 0.1 mg/L 2022–2025 Archived
Fluoride MONITORING AND REPORTING — 4.0 mg/L 2022–2025 Archived
Mercury MONITORING AND REPORTING — 0.002 mg/L 2022–2025 Archived
Nickel MONITORING AND REPORTING — — 2022–2025 Archived
Nitrite MONITORING AND REPORTING — 1 mg/L 2022–2025 Archived
Antimony, Total MONITORING AND REPORTING — 0.006 mg/L 2022–2025 Archived
Beryllium, Total MONITORING AND REPORTING — 0.004 mg/L 2022–2025 Archived
Thallium, Total MONITORING AND REPORTING — 0.002 mg/L 2022–2025 Archived
Selenium MONITORING AND REPORTING — 0.05 mg/L 2022–2025 Archived
Endrin MONITORING AND REPORTING — 0.002 mg/L 2022–2025 Archived
BHC-GAMMA MONITORING AND REPORTING — 0.0002 mg/L 2022–2025 Archived
Methoxychlor MONITORING AND REPORTING — 0.04 mg/L 2022–2025 Archived
Toxaphene MONITORING AND REPORTING — 0.003 mg/L 2022–2025 Archived
Dalapon MONITORING AND REPORTING — 0.2 mg/L 2022–2025 Archived
Diquat MONITORING AND REPORTING — 0.02 mg/L 2022–2025 Archived
Endothall MONITORING AND REPORTING — 0.1 mg/L 2022–2025 Archived
Glyphosate MONITORING AND REPORTING — 0.7 mg/L 2022–2025 Archived
Di(2-ethylhexyl) adipate MONITORING AND REPORTING — 0.4 mg/L 2022–2025 Archived
OXAMYL MONITORING AND REPORTING — 0.2 mg/L 2022–2025 Archived
Simazine MONITORING AND REPORTING — 0.004 mg/L 2022–2025 Archived
Di(2-ethylhexyl) phthalate MONITORING AND REPORTING — 0.006 mg/L 2022–2025 Archived
Picloram MONITORING AND REPORTING — 0.5 mg/L 2022–2025 Archived
Dinoseb MONITORING AND REPORTING — 0.007 mg/L 2022–2025 Archived
Hexachlorocyclopentadiene MONITORING AND REPORTING — 0.05 mg/L 2022–2025 Archived
Carbofuran MONITORING AND REPORTING — 0.04 mg/L 2022–2025 Archived
Atrazine MONITORING AND REPORTING — 0.003 mg/L 2022–2025 Archived
LASSO MONITORING AND REPORTING — — 2022–2025 Archived
2,3,7,8-TCDD MONITORING AND REPORTING — 0.00000003 mg/L 2022–2025 Archived
Heptachlor MONITORING AND REPORTING — 0.0004 mg/L 2022–2025 Archived
Heptachlor epoxide MONITORING AND REPORTING — 0.0002 mg/L 2022–2025 Archived
2,4-D MONITORING AND REPORTING — 0.07 mg/L 2022–2025 Archived
2,4,5-TP MONITORING AND REPORTING — 0.05 mg/L 2022–2025 Archived
HEXACHLOROBENZENE MONITORING AND REPORTING — 0.001 mg/L 2022–2025 Archived
Benzo(a)pyrene MONITORING AND REPORTING — 0.0002 mg/L 2022–2025 Archived
Pentachlorophenol MONITORING AND REPORTING — 0.001 mg/L 2022–2025 Archived
Total Polychlorinated Biphenyls (PCB) MONITORING AND REPORTING — 0.0005 mg/L 2022–2025 Archived
1,2-DIBROMO-3-CHLOROPROPANE MONITORING AND REPORTING — 0.0002 mg/L 2022–2025 Archived
ETHYLENE DIBROMIDE MONITORING AND REPORTING — 0.00005 mg/L 2022–2025 Archived
Chlordane MONITORING AND REPORTING — 0.002 mg/L 2022–2025 Archived
TTHM MONITORING AND REPORTING — 0.080 mg/L 2022 Archived
Total Haloacetic Acids (HAA5) MONITORING AND REPORTING — 0.060 mg/L 2022 Archived
Nitrate MCL EXCEEDANCE 12 MG/L 10 mg/L 2021 Archived
Arsenic MCL EXCEEDANCE 0.018 MG/L 0.010 mg/L 2020–2022 Archived
Nitrate MCL EXCEEDANCE 12 MG/L 10 mg/L 2020 Archived
Nitrate MCL EXCEEDANCE 11 MG/L 10 mg/L 2020 Archived
Nitrate MCL EXCEEDANCE 12 MG/L 10 mg/L 2020 Archived
Nitrate MCL EXCEEDANCE 13 MG/L 10 mg/L 2019 Archived
Nitrate OTHER — 10 mg/L 2019 Resolved
Nitrate MCL EXCEEDANCE 12 MG/L 10 mg/L 2019 Archived
Total Haloacetic Acids (HAA5) MONITORING AND REPORTING — 0.060 mg/L 2018 Archived
Coliform (TCR) MONITORING AND REPORTING — 5% of samples 2015 Resolved
Consumer Confidence Rule OTHER — — 2015 Resolved
Coliform (TCR) MCL EXCEEDANCE — 5% of samples 2015 Resolved
TTHM MONITORING AND REPORTING — 0.080 mg/L 2015 Resolved
Total Haloacetic Acids (HAA5) MONITORING AND REPORTING — 0.060 mg/L 2015 Resolved
Understanding violation types MCL violations mean a contaminant exceeded the federal maximum limit — the most serious type.
TT (Treatment Technique) violations mean required treatment procedures weren't followed, but don't necessarily mean contamination occurred.

Violation History

1 violation remains open, out of 67 recorded since 2015 (12 health-based).

About the Main Water System

Utility Richgrove Community Services District
PWSID CA5410024
Water source Groundwater — Drawn from wells — SDWIS source code GW
Population served 2,358
Service connections 525
Systems serving this area 1
Regulator State primacy agency
Data through 2026 Q2 — EPA SDWIS

Frequently Asked Questions

Is Richgrove tap water safe to drink? ▼
No federal limit is exceeded on record. 1 violation(s) remain open.
Does Richgrove water have PFAS? ▼
This system has never been sampled for PFAS. EPA's national monitoring covered systems serving 3,300 people or more, so no results exist — which is not evidence that none is present.
Who supplies water to Richgrove? ▼
Richgrove Community Services District (PWSID CA5410024). Groundwater. Drawn from wells — SDWIS source code GW
When was this system last inspected? ▼
It was last inspected on 2024-03-27. No significant deficiencies were recorded.

What Should Richgrove Residents Do?

1
Read your annual water report
Your supplier publishes a Consumer Confidence Report each July covering the prior year.
2
Check for a lead service line
Lead reaches tap water mainly through service lines and household plumbing. Suppliers now publish an inventory identifying lead lines.
3
Follow the open violation
This system has an unresolved violation. Contact the supplier for its corrective-action schedule.

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